Did the amazon yum IP change

Hello,

I am working through the online Learning Exercises. I attempted to run the sample from the Inheritance course; however, the puppet apply is attempting to get the zsh package from somewhere, and it fails. In the help section of the learning section, there are instructions to download samples from:https://s3-us-west-2.amazonaws.com/puppetlabs-workshop/workshop_sample.tar.gz, but this site is unreachable.